18 year old...starting over

Last year, I planned a trip to visit some friends in Brazil. I wasn't fat or even overweight (in fact, I was a cross country and long distance track runner for my school) but I knew Brazil = beach = bikini. Since I wasn't totally confident in my body, I started using my fitness pal, and went from 168 pounds (I'm 5'9'') to 149 pounds in about 2 months.

Once home, I continued to lose weight, but I became obsessive. I forced myself to wake up incredibly early every morning to get in a 1000 calorie-burn workout before school. I reached 144 pounds, and I loved the way I looked, and all the compliments I was getting. So I continued to restrict my calories and workout more and more (running twice a day, even after track season was over). It was crazy. I was incredibly unhappy. My crazy workouts continued (I hadn't had my period in months), and I soon developed tendonitis in my lower leg.
Then I broke-- I began binge eating constantly, and I physically could not run. Every day during the summer (before my senior year in high school) was just awful, and by the end, I had developed bulimic tendencies and still binged constantly. I had gained all the weight back and more. Senior year didn't get any better--I continued on a terrible binge and restrict cycle.

I'm now 185 pounds and absolutely miserable.
But, I decided, I don't want to be miserable. I don't want to use food for comfort, and I'm tired of bingeing, purging, restricting, and forcing my body to do incredibly strenuous workouts. There is only a month left until I graduate, and about 6 weeks until I leave for college (I'm doing summer term).
In these next six weeks, I want to nourish my body and work out a reasonable amount, about 5 times a week, to feel GOOD about myself.
I'm so sick of the negativity and how poorly I have been treating myself in these past few months.
So here I am again. I'm going to try to be rational and careful, so this terrible cycle doesn't repeat itself.

If there is anyone who would like to team up so we can help each other on our journeys, PLEASE add me!